Question

poziom D
a)5x-3+2x=4x+9
5x+2x-4x=9+3
3x=12\:3
x=4
b)8x-6-9x=5x-6
8x-9x-5x=-6+6
-6x=0\:(-6)
x=0
c) 2+4x-1+2x= -8+4x-7

4x+2x-4x= -8-7-2+1

2x= -16/:2

x= -8

d) -3+7x-2=3x-11+6x

7x-3x-6x= -11+3+2

-2x= -6/:(-2)

x=3

e) 4+5x-2=7x-7

5x-7x= -7-4

-2x= -9/:(-2)

x= 4,5

f) -8+7x+3=5x+4+4x+5

7x-5x-4x=4+5+8-3

-2x=14/:(-2)

x= -7

Answer 1

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